ndp.h
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1 /*
2  * Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
20 #ifndef NET_NDP_H
21 #define NET_NDP_H
22 
23 #include <stdint.h>
24 
25 #include "byteorder.h"
26 #include "net/ipv6/addr.h"
27 
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31 
37 #define NDP_RTR_ADV_FLAGS_MASK (0xc0)
38 #define NDP_RTR_ADV_FLAGS_M (0x80)
39 #define NDP_RTR_ADV_FLAGS_O (0x40)
49 #define NDP_RTR_ADV_CUR_HL_UNSPEC (0)
55 #define NDP_RTR_ADV_LTIME_SEC_MAX (9000)
56 
61 #define NDP_NBR_ADV_LTIME_NOT_DR (0)
62 
63 #define NDP_NBR_ADV_REACH_TIME (0)
64 #define NDP_NBR_ADV_RETRANS_TIMER (0)
72 #define NDP_NBR_ADV_FLAGS_MASK (0xe0)
73 #define NDP_NBR_ADV_FLAGS_R (0x80)
74 #define NDP_NBR_ADV_FLAGS_S (0x40)
75 #define NDP_NBR_ADV_FLAGS_O (0x20)
86 #define NDP_OPT_SL2A (1)
87 #define NDP_OPT_TL2A (2)
88 #define NDP_OPT_PI (3)
89 #define NDP_OPT_RH (4)
90 #define NDP_OPT_MTU (5)
91 #define NDP_OPT_RDNSS (25)
92 #define NDP_OPT_AR (33)
93 #define NDP_OPT_6CTX (34)
94 #define NDP_OPT_ABR (35)
101 #define NDP_OPT_PI_FLAGS_MASK (0xc0)
102 #define NDP_OPT_PI_FLAGS_L (0x80)
103 #define NDP_OPT_PI_FLAGS_A (0x40)
111 #define NDP_OPT_PI_VALID_LTIME_INF (UINT32_MAX)
112 #define NDP_OPT_PI_PREF_LTIME_INF (UINT32_MAX)
120 #define NDP_OPT_PI_LEN (4U)
121 #define NDP_OPT_MTU_LEN (1U)
122 
128 #define NDP_OPT_RDNSS_MIN_LEN (3U)
129 
136 #define NDP_MAX_INIT_RA_INTERVAL (16000U)
137 #define NDP_MAX_INIT_RA_NUMOF (3U)
138 #define NDP_MAX_FIN_RA_NUMOF (3U)
139 #define NDP_MIN_MS_DELAY_BETWEEN_RAS (3000U)
140 #define NDP_MAX_RA_DELAY (500U)
141 #define NDP_MAX_RA_INTERVAL_MS (600000U)
142 #define NDP_MIN_RA_INTERVAL_MS (198000U)
143 #define NDP_RTR_LTIME_SEC (1800U)
151 #define NDP_MAX_RS_MS_DELAY (1000U)
152 #define NDP_RS_MS_INTERVAL (4000U)
153 #define NDP_MAX_RS_NUMOF (3U)
161 #define NDP_MAX_MC_SOL_NUMOF (3U)
162 #define NDP_MAX_UC_SOL_NUMOF (3U)
171 #define NDP_DAD_TRANSMIT_NUMOF (1U)
172 #define NDP_MAX_ANYCAST_MS_DELAY (1000U)
173 #define NDP_MAX_NA_NUMOF (3U)
174 #define NDP_REACH_MS (30000U)
175 #define NDP_RETRANS_TIMER_MS (1000U)
181 #define NDP_MAX_RETRANS_TIMER_MS (60000U)
182 
190 #define NDP_MAX_NS_NUMOF (17U)
191 #define NDP_DELAY_FIRST_PROBE_MS (5000U)
192 #define NDP_MIN_RANDOM_FACTOR (500U)
193 #define NDP_MAX_RANDOM_FACTOR (1500U)
202 typedef struct __attribute__((packed)) {
203  uint8_t type;
204  uint8_t code;
207 } ndp_rtr_sol_t;
208 
215 typedef struct __attribute__((packed)) {
216  uint8_t type;
217  uint8_t code;
219  uint8_t cur_hl;
220  uint8_t flags;
224 } ndp_rtr_adv_t;
225 
232 typedef struct __attribute__((packed)) {
233  uint8_t type;
234  uint8_t code;
238 } ndp_nbr_sol_t;
239 
246 typedef struct __attribute__((packed)) {
247  uint8_t type;
248  uint8_t code;
250  uint8_t flags;
251  uint8_t resv[3];
253 } ndp_nbr_adv_t;
254 
261 typedef struct __attribute__((packed)) {
262  uint8_t type;
263  uint8_t code;
269 
274 typedef struct __attribute__((packed)) {
275  uint8_t type;
276  uint8_t len;
277 } ndp_opt_t;
278 
279 /* XXX: slla and tlla are just ndp_opt_t with variable link layer address
280  * appended */
281 
288 typedef struct __attribute__((packed)) {
289  uint8_t type;
290  uint8_t len;
291  uint8_t prefix_len;
292  uint8_t flags;
297 } ndp_opt_pi_t;
298 
305 typedef struct __attribute__((packed)) {
306  uint8_t type;
307  uint8_t len;
308  uint8_t resv[6];
309 } ndp_opt_rh_t;
310 
317 typedef struct __attribute__((packed)) {
318  uint8_t type;
319  uint8_t len;
322 } ndp_opt_mtu_t;
323 
330 typedef struct __attribute__((packed)) {
331  uint8_t type;
332  uint8_t len;
335  ipv6_addr_t addrs[];
337 
338 #ifdef __cplusplus
339 }
340 #endif
341 
342 #endif /* NET_NDP_H */
343 
network_uint32_t mtu
MTU.
Definition: ndp.h:321
uint8_t type
message type
Definition: ndp.h:203
Definitions for IPv6 addresses.
network_uint16_t csum
checksum
Definition: ndp.h:249
Prefix information option format.
Definition: ndp.h:288
Neighbor solicitation message format.
Definition: ndp.h:232
A 32 bit integer in big endian aka network byte order.
Definition: byteorder.h:86
Neighbor advertisement message format.
Definition: ndp.h:246
uint8_t code
message code
Definition: ndp.h:234
MTU option format.
Definition: ndp.h:317
uint8_t type
option type
Definition: ndp.h:289
A 16 bit integer in big endian aka network byte order.
Definition: byteorder.h:76
network_uint32_t pref_ltime
preferred lifetime
Definition: ndp.h:294
Redirected header option format.
Definition: ndp.h:305
network_uint16_t resv
reserved field
Definition: ndp.h:333
uint8_t flags
flags
Definition: ndp.h:250
uint8_t cur_hl
current hop limit
Definition: ndp.h:219
uint8_t type
message type
Definition: ndp.h:262
network_uint16_t csum
checksum
Definition: ndp.h:264
General NDP option format.
Definition: ndp.h:274
network_uint32_t resv
reserved field
Definition: ndp.h:206
uint8_t flags
flags
Definition: ndp.h:220
uint8_t type
option type
Definition: ndp.h:318
uint8_t len
length in units of 8 octets
Definition: ndp.h:276
network_uint32_t ltime
lifetime in seconds
Definition: ndp.h:334
uint8_t type
option type
Definition: ndp.h:306
Router advertisement message format.
Definition: ndp.h:215
Redirect message format.
Definition: ndp.h:261
network_uint16_t csum
checksum
Definition: ndp.h:235
uint8_t prefix_len
prefix length
Definition: ndp.h:291
uint8_t type
message type
Definition: ndp.h:233
uint8_t type
message type
Definition: ndp.h:216
network_uint32_t resv
reserved field
Definition: ndp.h:295
ipv6_addr_t dst
destination address
Definition: ndp.h:267
network_uint32_t retrans_timer
retransmission timer
Definition: ndp.h:223
network_uint32_t reach_time
reachable time
Definition: ndp.h:222
ipv6_addr_t tgt
target address
Definition: ndp.h:266
network_uint32_t resv
reserved field
Definition: ndp.h:236
uint8_t code
message code
Definition: ndp.h:204
ipv6_addr_t tgt
target address
Definition: ndp.h:252
network_uint32_t valid_ltime
valid lifetime
Definition: ndp.h:293
Functions to work with different byte orders.
uint8_t type
option type
Definition: ndp.h:275
Router solicitation message format.
Definition: ndp.h:202
ipv6_addr_t prefix
prefix
Definition: ndp.h:296
uint8_t code
message code
Definition: ndp.h:217
uint8_t len
length in units of 8 octets
Definition: ndp.h:319
ipv6_addr_t tgt
target address
Definition: ndp.h:237
uint8_t type
message type
Definition: ndp.h:247
network_uint32_t resv
reserved field
Definition: ndp.h:265
Recursive DNS server option format.
Definition: ndp.h:330
uint8_t len
length in units of 8 octets
Definition: ndp.h:332
Data type to represent an IPv6 address.
Definition: ipv6/addr.h:74
network_uint16_t resv
reserved field
Definition: ndp.h:320
uint8_t code
message code
Definition: ndp.h:248
uint8_t flags
flags
Definition: ndp.h:292
network_uint16_t csum
checksum
Definition: ndp.h:205
network_uint16_t ltime
router lifetime
Definition: ndp.h:221
uint8_t code
message code
Definition: ndp.h:263
uint8_t len
length in units of 8 octets
Definition: ndp.h:307
uint8_t type
option type
Definition: ndp.h:331
uint8_t len
length in units of 8 octets
Definition: ndp.h:290
network_uint16_t csum
checksum
Definition: ndp.h:218